The Cromar Pro GRP C4 Universal Internal Corner Trim is a high-quality, durable product designed to provide a professional finish to any roofing project. Manufactured by Cromar, it offers an effective solution for covering and sealing internal corner joints in GRP roofing systems. This universal corner trim is easy to install and is made from glass reinforced plastic (GRP), ensuring long-lasting performance even in challenging weather conditions. Its versatile design allows it to fit perfectly in any internal corner, contributing towards a watertight finish.